468 GYMNODONTID.E. 



aperture, and upon the external surface of the head of the 

 example of the Sun-fish taken at Tenby, there were attached 

 about twenty specimens of Tristoma coccineum. Two of 

 these were given to me by H. E. Strickland, Esq. of Cra- 

 combe House, Gloucestershire, from one of which the repre- 

 sentations in the vignette below of the upper and under 

 surface were taken of the natural size. For an account of two 

 species of these very rare parasitic animals, see the Synopsis 

 Entozoorum of Rudolphi, page 427. 



